Pump for pneumatic tires



(No Model.)

. A. & F. E. KBHL.

PUMP FOR PNEUMATIC TIRES.

No. 591,229. Patented Oct. 5,1897.

f .A I

E @aFrJu eEKehz, B Y I ATTORNEY.

NITED STATES "PATE T rricn.

ANTHONY. KEI-IL AND FRANK E. KEI-IL, OF CONNERSVILLE, INDIANA, ASSIGN- ORS OF TWO-THIRDS TO WILLIAM E. HEEB, CATHERINE I. KEHL, AND DOMIAN L. KEI-IL', OF SAME PLACE, AND GEORGE RECIL OF. INDIANAP- OLIS, INDIANA.

PUMP FOJR PNEUMATIC TIRES.

SPECIFICATION forming part of Letters Patent No. 591,229, dated October 5, 1897..

1 Application filed June 5, 1897. Serial No. 639,598. (No model.)

To ctZZ whom it may concern/.-

Be it known that we, ANTHONY KEHL and FRANK E. KEHL, citizens of the United States, residing at Gonnersville,in the county of Fayette and State of Indiana, have invented certain new and useful Improvements in Pumping Attachments for Pneumatic Tires of Vehicles, of which the following is a specification.

The object of our said invention is to provide a convenient means for inflating the tires of vehicle-wheels by power from the Wheels themselves during the time the wheels are being revolved;

Said invention consists of a pump located inside the hub of the wheel on the shaft thereof and a tube extending from said pump to the rim of the tire, where it connects with the usual tire-valve, said tube being adapted by proper manipulationto be connected to or disconnected from the discharge-opening of the pump. 7

Referring to the accompanying drawings,

which are made apart hereof and on which similar letters of reference indicate similar parts, Figure 1 is a side elevation of a bicy cle equipped with our invention; Fig. 2, a transverse sectional View of the hub of the bicycle, showing a pump therein, with the lower end of the tube connectedto its dis charge-orifice; Fig. 3, a similar view with the tube disengaged from the pump; Fig. 4, a

longitudinal sectional view of the hub; Fig.

5, a sectional view of the valve to the wheeltire with a fragment of the tube in connection therewith, showing the'position occupied by said tube at its upper end when the lower end is in the position shown in Fig. 2; Fig. 6, a similar view, but showing the position of the tube at the upper end when the lower end is in the position shown 'in Fig. 3 5 and Fig. 7

stationary, as is usual, and carries the pumppiston. The pump-cylinder; O surrounds the piston and will usually have no motionindependent thereof, so that when said cylinder is disengaged from the wheel-hub shell the pump has no operative action. The cylinder D has an ingress-opening d and an egressopening (1 Alongside the egress-opening is a projection d, and a suitable packing 19 should surround said opening and form a seat for the lower end of the tube E whenthe latter is in contact therewith, as bestshown in Fig. 2.

The tube E is screw-threaded at the lower end and mounted in a soreW-threadedopening in the wheel-hub shell A. Its outer end engages with the tire-valve 1;, attached to the tire T. Normallywhen the pump is not in use this tube is moved (preferably by means of the screw-threaded construction shown) so that it occupies the position shown in Fig. 3, free from the pump, in which case its operation on the tire-valve o is also freed and said valve is closed. Then, however, it is desired to inflate the tire, this tube E is revolved and its lower end driven down, by means of the screw-thread thereon, into the path of the projection d. This is so arranged as to engage the pun1pcylinder at exactly the proper point, so that the continued movement of the tube inwardly seats its lower end firmly on the packing surrounding the egressopening in said pump-cylinder. By this time the tire-valve v has been opened, so that there is a free passage from the pump to the tire.

Obviously now upon the further revolution of the wheel the pump cylinder is revolved around the pump-piston and the pump caused to operate, drawingin air at its ingress-opening d and driving it. out at its egress-opening d and forcing it through the tube E into the tire. lVhen a sufficient amount of air has been pumped, a slight movement of the tube E in the reverse direction uncouples the connection of the pump and closes the tirevalve, when the pump is idle, as before, the valve 1 being at the same time closed or permitted to close, as before explained, so that the air is retained Within the tire.

. The valves connected to the wheel-tires are,- generally speaking, of any usual or desired form. In such a valve the valve proper, o, rests upon an appropriate seat, being normally held against the same by a spring 8. The force of the air raises the valve and passes on by it into the tire, and said valve seats itself when the pressure from the outside is relieved or is less than the pressure inside the tire, all as will be readily understood. Below this valve, however, We have provided a second valve w, which is in the form of a fixed plate in the valve-tube, having perforations near the sides and a conical center against I which the end of the tube E may press when said tube is in the positions shown in Figs. 3, 6, and 7. WVhen so seated, said parts effectually cut off the flow of air and take the place of the ordinary cap to the valve.

Having thus fully described our said in vention, what we claim as new, and desire to secure by Letters Patent, is-

1. The combination, in a vehicle-wheel, of the wheel-hub, a rotary pump constructed within said wheel-hub, a bicycle-tire, and a tube extending from said hub to said tire, said tube beingad j ustable longitudinally and said pump being provided with a projection into the path of which the adjustable tube is adapted to be projected, said projection be ing properly located relatively to the egressopening of the pump so that further adj ustment accomplishes a contact between said tube and said egressopening.

2. The combination, in avehicle, of a nonrotary Wheel-shaft, a pump-piston mounted thereon, a pump-cylinder surrounding said piston and provided with ingress and egress openings for the air and a detent projection alongside the egress-opening, and a tube extending between the wheel-hub shell and the wheel rim and adjustable radially of the wheel, its inner end being adapted to be adj usted into the path of the projection alongside the egress-opening in the pump-cylinder and to make a contact with said egress-opening, the adjustment at the same time causing the opening of the tire-valve at the other end of the tube, substantially as set forth.

In Witness whereof We have hereunto set our hands and seals, at Oonnersville, Indiana, this 1st day of June, A. D. 1897.

ANTHONY KEHL. FRANK E. KEHL.

[n s] [n s] 

